epigastrium的复数形式怎么写

epigastrium的音标：epigastrium的英式发音音标为：[ˌepɪ'gæstrɪəm]epigastrium的美式发音音标为：[ˌepɪ'gæstrɪrm]...

n.腹上部，第一腹片...

The pain of biliary colic is occasionally in the epigastrium.胆绞痛的疼痛有时出现在上腹....